Shuttle



April 17,1928. 4

L. PAVIA SHUTTLE Filed Aug. 6. 1927 WITNESS Patented Apr. v17, 192.8. v

, PAIENI v' yoFF LUIGI PAVIA, OF'ALLENTOWN, PENNSYLVANIA.

SHUTTLE.Y

Amacai-ion flied Aiigust s, 1927. serial No.vv 211,207.`

In shuttles of the type 'in' which `the spindle, pivoted therein, 1s split Afrom the butt toward the point and there are'asprlng means in the split normally acting to expandy thesplit portion and means in the shuttle body to cause collapse of the split portion of thespindle when the latter is raisedon its pivot and allow the wett package tobe slipped on or oil' the spindle said spring means has heretofore been arrangedr to act only on the butt-end part of the spindle, or substantially coincident with its pivot. It is found in practice that in this construction the spindle does not always effectually Ahold the package against f lengthwise slippage because the spreading o't' the legs to grip 'the bore of the weft package is confined to their butt-end portions, so

that the package is only locally grippedg at its butt-end. The principal object o fvthis invention is to extend the gripping action of the spindle with respect to the package to Y ward the point of the spindle, thus not only more to eectually grip ay package nicely adapted to the spindle but in fact obtain an effectual grip on packages whose bores are perhaps larger and hence not sonicelyadapted to the spindle.' A further object is to obtain this result by resort to simple means requiring simple operations in the forming of the spindle and assembling of its parts.l

lIn the drawing,

Fig. 1 is a plan view of a shuttle;

Fig. 2 is a transverse section on line 2-2 of Fig. 1; f

Fig. 3 is an inside elevation of one leg of the spindle and the spring which maintains the spindle in either the depressed (or closed) or elevated (or open) position, with certain pins shown in section;

vFig. 4 is a longitudinal section of the support the usual bent spring 6 for holding the spindle either depressed or elevated in contact with the lpin 7, are or may be all substantially ot a well-known construction.V v'lhefspindle also may follow a well-known constructioninso far as' it comprises two longitudinal substantially counterpart sectionsor.y halves 8 which-at the free ends there-1 of may be welded or otherwise secured together to form a unitary body but from a point rnear said iree ends are unconnected so that from such point toward the butt the f spindle is in effect split; and in accordance with such well-known construct-ion 1t may have in said sections and at the butt thereof the alined rholes 9 toreceive the spiral spring 11 which when the parts are assembled as in Fig. 1. and when the spindle is` depressed. or closed normally acts to spread or expand the splity part of vthe spindle.

`There may valso be iutings 12 or equivalent on the spindle to grip the bore of the weft package. Y

According to this invention, before the halves or sections of the spindle are Aassembled they are formed with'inside longitudinal grooves 13 which will be opposite each other when said sections are assembled. These grooves yreceive an elongated arched spring 14 consisting of a piece of tempered metal having a suitable curvature therein and preferably having its ends slightly re-r bent. This spring may be assembled with the spindle as shown in the drawing afterthe sections of the spindle have been welded or otherwise secured together as described.

In Fig. 5 the construction is substantially the same as already described excepting that one of the grooves 13 has va recess 15 therein and one endof the'spring 14 is bent off and,` engaged in said recess; if desired this recess may be a 'hole through whichthe end of the spring protrudes and such protruding end may be upset or riveted, as at 1G. This construction insures against the spring working endwise in the grooves and possibly escaping from the shuttle to cause damage to the goods being woven.

`Having thus vfully described my invention, what I claim is: i t

1. The combination of a shuttle body hav-A ing a weft-package'cavity anda spindle pivoted in said'. body on an axis traversing the cavity, ysaid spindle being split from near its :tree endto .its other end and thus having legs, means near the spindle pivot to spread apart said legs when the spindle is depressed, said body having means to press said legs together when the spindle is raised, and a spring interposed between the legs ata point between said means and the free end of the spindle and also active to spread apart said legs when the spindle is depressed.

2. rlhe combination oi a shuttle body having a weft-package cavity and a spindle pivoted in said body on an axis traversing the Cavity, said spindle being split from near its freev end to its other endand thus having legs and having a longitudinal groove in one leg facing the other leg, said body having means to press said legs together when the spindle is raised, and an elongated spring interposed between the legs and lseated in said groove and .active to spread said legs apart when the spindle is depressed.'

8. The combination of a shuttle body having a weft-package cavity and a spindle pivoted in said body on an a-Xis traversing the cavity, said spindle being split from near its and having a. longitudinal groove in each leg Itaeing the other leg, said body having means to press said legs together when the spindle is raised, and an elongated spring interposed between the legs and seated in both grooves and active to spread said legs apart when the spindle is depressed.

In testimony whereof 'I alix my signature.

LUIGI PAVIA.

.lree end to its other end and thus having legs i 

